Window lock



May 20, 1952 s. BEDER WINDOW LOCK Filed June 8, 1949 Patented May 20, 1952 WINDOW LOCK Samuel L. Beder, New York, N. Y., assignor to Irwin F. Mills Associates, New York, N. Y.

Substituted for abandoned application Serial N 0.

633,135, December 6, 1945.

This application June 8, 1949, Serial No. 97,805

8 Claims.

This invention relates to novel and useful improvements in window locks and is a substitute application for my application entitled Window Locks, Serial No. 633,135, filed December 6, 1945, which now stands abandoned.

One of the objects of the invention is to provide a simple, efiicient and. inexpensive window locking device which will automatically look when a person closes the window. A further object is to so construct the various parts of the looking device that the retraction and projection of the locking plunger is efiected under spring tension.

A still further object is to assure that when a window is closed, it is locked even though the person closing the window has given no thought or effort towards assuring the locking of the window.

With the above and other objects in view my invention consists in the combination, arrangement, and details of construction disclosed in the specification and then more particularly pointed out in the appended claims.

In the drawings, wherein similar reference characters designate similar parts throughout the respective views:

Figure 1 is a perspective view of a window frame embodying my invention.

Figure 2 is a longitudinal section of the locking device and of its keeper, the parts being in locked position.

Figure 3 is a View similar to Figure 2 but showing parts in a qualified position, and

Figure l is another view similar to Figure 2 showing relationship of parts with respect to the position of a window about to be locked by means of my invention.

Referring to drawings, which are merely illustrative of my invention the upper and lower window sashes are designated respectively A and B; C designates the keeper fastened on lower sill of upper Window, while D designates the housingof the lockin device.

Inside of this housing D, which is hollowed out or otherwise fashioned to receive all the movable parts is a reciprocatable plunger l having a bevelled locking end II and formed on its bottom edge centrally with a recess [2. An oscillatable rocker lever [B is mounted to swing upon a fixed transverse pivot pin I8, secured in the housing and has attached at its upper end the inner end of plunger I!) by means of pivot l4, while at its lower end the rocker lever is pivotally connected to the inner end of a latch bar 20 as at l9, upon which latch bar is formed an upstanding boss 2i. On the floor of the sion 15 slidably projects beyond the housing where it carries an operating handle [6.

The housing is operatively secured in position upon the upper edge of lower part of window B as shown in Figure l where its plunger Ill may be projected into the keeper C attached opposite the front of the housing to the lower edge of window A. By projecting the plunger into the keeper both windows are locked and by retracting it the windows are free to be opened.

The normal position of the parts is shown in Figure 3 where the plunger is in retracted position lying within the housing. In this position of the parts the arched or bow spring 22 is relaxed and its hump forms a prop for supporting the latch bar 20; the latch bar is held tilted on a bias by spring 22 due to the fact that the boss 2| on lever 20 is lodged in the recess l2 .of the plunger; at this time coil spring I! has been compressed by pulling on knob It. This tension exerted upon the plunger is in the line of its longitudinal axis which renders the latching action of the boss 2| a rigid one so that as the window carrying the locking device is raised and lowered the jarring action will in no manner disengage the parts which hold the plunger in retracted position.

In operation the user will take hold of handle [6 and pull it out as far as it will go when desiring to release the locking plunger H! from its keeper C. In doing this, coil spring I! is compressed, rocking lever I3 is tilted, its upper end moving rearwardly and its lower end forwardly; in this way the recess 12 of the plunger and the boss 2| on latch bar 2!) are advancing towards each other, and, as bow spring 22 is under tension, flattened out, it will cause the boss 2! automatically to snap into recess [2 of the plunger when the boss 2! and recess 12 are in registry, at which time the latch bar 26 moves out of horizontal position to assume a biased inclined position as shown in Figure 3. The plunger ill is held inside housing D in fully retracted position, so now the user can raise or lower the windows freely. When it is desired to open the window from locked position, Figure 2, the user takes hold of handle it, pulls it backward and the position of both parts changes to those shown in Figure 3 and the window is ready to be opened by raising the lower sash or lowering thev upper sash. At the same time latch bar 20 moves forward, and upon raising the lower window it engages the top of the keeper, automatically moves rearwardly and pushes plunger I0 forward into the position shown in Figure 4 ready to be acted upon by the top of the keeper when window is again closed. I intend to claim all variations falling within the purview of the appended claims.

I, claim:

1. A locking device consisting of a case having side, a latch bar having a boss on its upper side,

a spring adapted to be compressed as said rocker lever swings on its pivot, said boss being adapted to be automatically urged into engagement with the recess of said plunger by the release of tension on said spring.

2. A locking device consisting of a casing having therein a transverse pivot, a rocker lever mounted so as to rock upon said pivot, a plunger having a locking end projecting outside the casing, having its inner end mounted on said rocker lever, a handle having a bolt slidably disposed in the casing for reciprocating the plunger, a spring coiled around said bolt, disposed between the inner end wall of said casing and inner end of plunger, a bow spring resting in said casing, a slidable latch bar carried by said rocker lever, a boss on said latch bar which, on abutting said plunger causes said latch bar to compress said bow spring, and a notch in said plunger, said bow spring urging said boss into said notch when said plunger is retracted within the casing.

portion projecting therefrom, a bow spring se cured to the bottom of said casing under said shelf, a latch bar member having its outer portion slidably supported on said bow spring, a boss on said member held by said spring in engagement with said plunger, means interconnecting said plunger and member at their inner ends adapted to cause them to move in opposite directions so that the forward ends thereof may alternately project outside the casings open end, a second spring normally holding said plunger in a position projecting from said casing, and a handle for retracting said plunger in opposition to said second spring, said plunger having provision for receiving said boss for the purpose of latching itself in the course of its retraction.

4. A device as described comprising a casing open at one end, a shelf at the forward end of said casing forming a guideway, a plunger slidably mounted in said guideway with its rear portion projecting therefrom, a pivot disposed transversely in said casing in back of said shelf, a rocker lever mounted medially on said pivot and pivoted to the inner end of said plunger so as to be swung by said plunger in opposite directions, a spring interposed between said plunger and the back wall of said casing urging said plunger to project out of the open end of said casing, a handle outside said casing for moving said plunger to compress said spring to retract the plunger inside of said casing, and means sliding under said shelf, connected to said rocker lever having provision to latch said plunger upon completion of its retraction.

5. In a device as described a casing open at its front, a bow spring secured to the floor of the casing, a latch bar slidably supported upon said bow spring, a pivot transversely disposed in said casing near its end wall, a rocker lever mounted medially on said pivot, being pivoted to the inner end of said latch bar for reciproeating it so said latch bar may project outside the casing and be retracted thereinto, a plunger pivoted to the opposite end of said rocker lever adapted to be moved by it in a direction counter to the direction of movement of said latch bar so as also to project outside the casing and be retracted thereinto, means for guiding said plunger, a spring opposing the retraction of said plunger, and a boss on said latch bar for holding said plunger retracted.

6. In a device as described a casing open at its front, a pivot transversely secured in said casing near its end wall, a rocker lever medially mounted upon said pivot so it can oscillate in opposing directions, a plunger actuated by one end of said rocker lever to project outside of, and be withdrawn into said casing as said rocker lever oscillates, a latchbar actuated by the opposite end of said rocker lever to project outside of the casing when the plunger is retracted and, a spring causing said latch bar and plunger toautomatically interlock upon completion of the retraction of the plunger.

7. In a device as described a casing open at its front end having there a shelf located between its top and bottom, a plunger guided on said shelf in a reciprocating movement to project outside of, and be withdrawn within said casing, a bow spring beneath said shelf, a pivot pin transversely mounted in said casing behind the bow spring, a rocker lever medially mounted upon said pivot, one end being pivoted to said plunger, an elongated latch bar having its forward portion slidably supported directly upon the bow spring and its rear end pivoted to the adjacent end of the rocker lever, said plunger on its bottom edge being formed with a recess, a coiled spring in back of said plunger compressed by it when in retracted position, a rounded boss on the upper edge of said latch bar engaging in said recess to latch the plunger in spring-compressing position, and an operating handle for said plunger for retracting said plunger into said casing and to tilt said rocker lever to project the latch bar whereby the said boss will enter the recess in the plunger to relieve the tension on the bow spring.

8. In a device as described a casing open at its front end, a plunger guided for sliding movement against the top of the casing, a spring engaging the plunger to project it outside of said casing, a bow spring secured to the bottom of the casing, an elongated latch bar having an upwardly projecting boss with a rounded terminal disposed midway of said bar, said plunger having a rounded cam recess on its under edge into which the boss of the latch bar is thrust by action of said bow spring during the movement of this bar to projecting position, in order to latch the plunger, and operative means interconnected to both the plunger and latch bar for causing them to move in opposite directions.

SAMUEL L. BEDER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 466,184 Pumyea Dec. 29, 1891 1,300,719 Gangewere Apr. 15, 1919 1,564,128 Curtis, Sr. Dec. 1, 1925 1,858,345 Spindler May 17, 1932 2,184,388 Kraft Dec. 26, 1939 

